Gas-producing apparatus.



No. 703,943. Patented July I902.

- J. H. MILLER, In.

GAS PRODUCING APPARATUS.

(Application filed Jan. 24, 1902) (No Model.) 2 sham-sheet I.

A I TOENEYS No. 703,943. Patented July], I902.

.1. H.; MILLER, m. x GAS PRODUCING APPARATUS.

' (Application filed Jan 24. 1902.1

(lg Iludel.) 2 Sheets-Sheet 2,

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A TTOHNEYS UNITED STATES PATENT FFICE.

JOHN HENRY MILLER, JR., OF IRWIN, PENNSYLVANIA.

GAS-PRODUCING. APPARATUS.

SPECIFICATION forming part of LettersPatent No. 703,943, dated Julyl,1902.

- Application filed January-24, 1902. Serial No. 91,067. (No model)illuminating-gas, and the same co'mprehends' a novel, cooperative, andpeculiar arrange ment of parts, all of which will hereinafter be fullydescribed, and specifically-pointed out in the appended claims,reference being had to the accompanying drawings,in which- Figure 1 is aside elevation of my type ofgas apparatus looking in the direction ofarrow a in Fig. 2, portions being broken away to better illustrate someof the parts. Fig. .2 is a plan view thereof. Fig. 3 is ahorizontal'section of the same, taken practically on the line 3 3 ofFig. 1. Fig. 4 is a horizontal section taken on the line 4 4 of Fig. 1.Fig.5 is an end elevation of the apparatus, one of thegenerating-chambers being shown partly in cross-section. Fig. 6 is adetail side view,

partly in section, the latter being ta'ken the line 6 6 of Fig. 5 andlookinginthe direction of arrow 1) on Fig. 5.

In the practical construction myinvention includes a number ofgenerating-compartments consisting of perpendicular chambers, threebeing shown in the drawings and designated by 1, 2, and 3. Thesechambers have a like construction, are disposed transversely of thecomplete structure and in parallel planes, their upperor crownportionbeing arched, as at 1, where they merge with'th'e front and rear walls,(indicated by w up) One of the said chambers, preferably the onedesignated as No. 1, communicates a't'the top with thevaporizing-chamber D for reasons presently explained.

Each of'thechambers 1, 2, and 3 has three doors d d d disposed indifferent horizontal planes, the upper one at of which covers thefilling or feed openingf in the front wall w, the next lower end dcovers the clinker-openingf, andthelowermost one 61 the ash-pit openingf Each chamber 1, 2, and 3 has a grate g in a plane just below theopening f, as clearly shown in Fig. 5, and the several doors dd deach'have the usual latch devices, as shown.

opening f, so'that the fuel can be thrown in the chambers 1, 2, and 3and filled up to a point under the aforesaid chamber 4, as will beclearly understood by reference to Fig. 5. The chamber4 is formed of anapproximately semicircular shell made of fire-clay, like a retort forfgasfand which extends through the end wall to andinto the end wall 20at which point'itis closed by a cap-plate E, bolted to the sai'dshell."At the opposite end an extension l fis bolted to the shell l in the headof which is a door or manhole 4 and with this extension communicates astack B, having a cut-off or closure valve b at the top.

P designates the gas-offtake pipe,conneoted with the extension 4. andwhichdischarges into the water seal or purifying-tank G of any approvedconstruction and having the usual oiftake or house-supply pipe P andwater-pipe P as shown.

By providing a steel shell 4 and mounting it cooperatively with theother parts, as described, I canin case of necessity or desirabilityremove'said shell by disconnecting the extension 4 'jtherefrom andremoving the cap plate'E and substituting a new shell therefor;

By referringnow to Fig. 3 it will be noticed theverticalwalls thatseparate chambers 1,

2, and 3 have openings 0 o to provide for circulation of the gaseousproducts from the vaporizing-chamber D to chamber 1 through chamber 2and from thence to chamber 3, and from said chamber 3 the products passup into the chamber 4, the latter having an inlet 4 directly over thechamber 3, as clearly shown in Fig. 3. v

The vaporizing-ohamber D, before referred to, extends vertically abovethe chamber 1, and said chamber D is in the nature of a wide stack, itsupper end having a stack piece proper (indicated by B) and provided witha closure-valve, as shown.

chambers 1, 2, 3, and 4, chamber D, and the chamber 1, as beforedescribed, by reason of The chamber D has openings normally closed byhinged doors 8 8 and the interior of chamber D is made up ofchecker-brickwork (indicated by D to provide a maximum heat-surface forthe oil to pass over.

H designates the valved crude-mineral-oilfeed pipe that discharges intothe upper part of chamberD, and 10 10 10 designate the airblast tubesfor the chambers 1, 2, and 3, and 11 11 11 the valved steam-jet pipesfor injecting steam under the grate-surfaces of said chambers 1, 2, and3.

The manner in which my producing apparatus is set in operation is bestexplained as follows: The chambers 1, 2, and 3 are first filled withhard coal or coke within one foot of the bottom of the top openings 3.The doors tosaid chambers are then closed and the closure-valves on thestacks'B and B are opened. The blast-pipes that feed under the grates gare now opened and maintained until the blast is run up to abright-orange heat. The blast-pipes are then closed and soft nutcoal ischarged through the feed-openings f onto the top of fire to the desiredheight. The doors dare then closed, as are also the valves for stacks BandB, steam turned on under gratesg, and oil turned into thevaporizingchamber D. Taris then fed into No. 1 chamher by anysuitableinjector means. The apparatus will now he generating gas, thetime of runs in the practical operation of my invention being from tento twenty-five minutes.

By arranging the several parts as described and charging the apparatusin the manner stated the nitrogen is driven otf and the desired gasproduct is left practically free of nitrogen. Furthermore, all of theheavy car- D0 is extracted from the tar fed into the its running throughthe several chambers. Again, my improved arrangement of parts presents avery large amount of heating-surface. The oil is vaporized in chamber Dand caused to pass through the several chambers l, 2, 3, and 4, where itintermixes with the other products, the gaseous mixture passing from thecham ber4 to the seal and purifying devi'ces.

' Duringblastiugtheheat passes outthrough stacksB B. The greatest part,however, goes up through the checker-brickwork in the chamber D.

In practice the nut-coal that is charged into the upright chambers 1, 2,and 3 is not drawn out, but remains in said chambers to keep up afire-bed. Crude oil is mixed with the nut-coal for enriching.

In my construction of apparatus I am enabled to obtain, five hundred tosix hundred 1 heat units as against three hundred and fifty unitssecured in water-gas and also have a complete combination of coal andwater gas produced under a uniform and regular candle-power. It shouldalso be stated that in operation when gas is making it passes throughthe partitions between the several chambers 1, 2, and 3, which helps tobreak the small globules, and thereby more thoroughly fix the gas.

In charging the chambers 1, 2, and 3 with soft nut-coal, as stated, Ihave the advantage of spreading it all over the surface of the fire, andafter the gas is all drawn out of said coal it remains on the fire, andthereby no heat'is lost drawing it out and substituting cold fuel.Again, by providing for charging the nutcoal with a shovel the same canbe easily made even over the surface of the fire and not in piles, as isusually the case when fed by magazines and hoppers.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a gas-producer of the character described, the combination withthe main structure including the vertical walls thereof, avertically-disposed generating-chamber, a valved stack therefor, andmeans for feeding vaporized oil into the said vertical chamber; of thehorizontal chamber, consisting of a metal shell endwise slidable anddetachably supported in the vertical walls of the main structure, saidshell having an intake in communication with the generating-chamber, aclosure-cap for one end of said shell, and an extension for the otherend, provided with a valved draft flue or stack and gas-outlet, allbeing arranged substantially as shown and for the purposes described.

2. In a gas producing apparatus of the character described, comprisingin combination, a main structure, having a series of parallelvertically-disposed generating-chambers 1, 2 and 3, a blast and asteam-injector means cooperatively joined therewith, the division-wallsbetween the chambers 1, 2 and 3 having openings for joining saidchambers, the horizontal chamber 4, having an opening in communicationwith the chamber 3, and having an extension provided with a valved stackand an outlet,'the vaporizer-chamber D, in communication with thechamber 1, and having a valved draft-stack and an oilsupply for saidchamber D, all being arranged substantially as shown and for thepurposes described.

JOHN HENRY MILLER, JR.

Witnesses:

HARRY H. MILLER, WILLIAM BER OWITS.

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